Natalie R. Yafi is a dietitian with extensive expertise in prevention of chronic diseases, diet and advanced biomarker testing. She has co-authored 2 manuscripts on “testosterone and the metabolic syndrome? and “diet and men’s sexual health?, and has been invited as a guest speaker to the past 2 University of California Irvine Men’s Health days. She is currently working as the manager of nutrition education for a weight loss medical device company.